Experimental study on carbon dioxide decomposition by atmospheric pressure dielectric barrier discharge with Titanium dioxide as dielectric barrier

Carbon dioxide (CO2) decomposition at ambient temperature and pressure by low-temperature plasma methods can provide a possible solution to reduce greenhouse gas emissions. Although plenty of studies on CO2 decomposition by dielectric barrier discharges (DBD) have been reported, the conversion rates and energy efficiencies obtained so far are generally low. Previous exploratory studies have shown that the use of a dielectric with a higher permittivity as dielectric barrier can promote the conversion of CO2. In this work, titanium dioxide (TiO2) was used as dielectric barrier. A single TiO2 layer DBD reactor and a double TiO2 layer DBD reactor were used for the experimental study of CO2 decomposition.